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23 lines
918 B
Markdown
23 lines
918 B
Markdown
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Modifier ereplace
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=================
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Perform a regular expression search and replace.
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[Read more](http://www.php.net/manual/en/reference.pcre.pattern.syntax.php) about regular expression.
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```
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{$string|replace:$pattern:$replacement}
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```
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Searches `$string` for matches to `$pattern` and replaces them with `$replacement`.
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`$replacement` may contain references of the form `\n`, `$n` or `${n}`, with the latter form being the preferred one.
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Every such reference will be replaced by the text captured by the n'th parenthesized pattern. n can be from 0 to 99,
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and `\0` or `$0` refers to the text matched by the whole pattern.
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Opening parentheses are counted from left to right (starting from 1) to obtain the number of the capturing subpattern.
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To use backslash in replacement, it must be doubled.
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```smarty
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{var $string = 'April 15, 2014'}
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{$string|ereplace:'/(\w+) (\d+), (\d+)/i':'${1}1, $3'} {* April1, 2014 *}
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```
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